Objective To discuss the effect of daidzein on hepatocellular carcinoma SMMC7721 cell proliferation CD133 expression on tumor stem cell.Methods Hepatocellular carcinoma SMMC7721 cells were cultured,digested and passaged,and divided into six groups with different drug:control group with no daidzein,100 μg/mL daidzein group,200μg/mL daidzein group,300μg/mL daidzein group,400μg/mL daidzein group ,500μg/mL daidzein.The inhibition ratio,hexokinase,alkaline phosphatase and CD133 levels in SMMC7721 cell were detected and compared at 24 h,48 h,72 h among those groups. Results The inhibition ratio was increased by Daidzein dose increasing,and decreased apparently by times extending,especially in 400μg/mL and 500μg/mL daidzeingroups.Compared with control group,the hexokinase and alkaline phosphatase activity and CD133 expression were decreased apparently in groups treated with daidzein(P<0.01).The more the dose,the higher the drop(P<0.01).Conclusion Daidzein can inhibit hepatocellular carcinoma SMMC7721 cell proliferation,and inhibit CD133 expression on tumor stem cell.

Objective To explore the effects of lycium barbarum polysaccharide (LBP) on restraining the mouse pancre?atic cancer cells LTPA by the polarization of macrophages to type 1 macrophages (M1). Methods LTPA tumor model of the subcutaneous CB-17SCID mice was constructed. Model mice were randomly divided into tumor-bearing model group (n=10) and LBP treatment group (n=10). The LBP treatment group was fed 10mg/kg LBP every day, and the tumor-bearing model group was fed the same dose of normal saline. The same amount of macrophages Raw264.7 was randomly divided into the control group and experimental groups (different concentrations of LBP). MTT assay was used to detect the optical density (OD) of Raw264.7 in experimental groups and control group. ELISA was used to detect the levels of the interleukin (IL)-12 and IL-10 in experimental group (LBP was 100 mg/L) and the control group. Flow cytometry was used to test the levels of the membrane protein CD16/32 and CD206 in experimental group (LBP was 100 mg/L) and the control group. The tumor mass was weighted and the volume was calculated after three weeks. The effects of LBP on the growth of subcutaneous tumor were detected. HE staining and KI-67 staining were used to detect the microscopic changes of tumor and the proliferation of the LTPA. Results The dose of 100 mg/L LBP can promote the growth of the macrophages Raw264.7 (P<0.01), and induced the high expression of CD16/32 and low expression of CD206, high secretion of IL-12 and low secretion of IL-10. The weight, volume of the tumor and the expression of KI-67 were significantly lower in experimental group than those in the con?trol group (P<0.01). The microscopic necrosis area range of tumor was larger than that of control group. Conclusion The LBP has the effect of restraining LTPA by the polarization of macrophages to M1.

Natural killer T-cell lymphoma (NKTL) is a malignant neoplasm which usually involves the nasal cavity or paranasal sinuses, while an orbit origin is extremely rare. Here we report the clinical, radiological and histopathologic features of a patient with NKTL originating from the orbit. We analyzed the clinical and radiologic records in the whole course of the disease. We also reviewed the morphology and immunohistochemistry of the neoplasm biopsy, including the presence of CD56, CD3 and cytotoxic molecules. This case demonstrated that nasal-type NKTL with a poor prognosis can originate from the orbit.
Humans ; Lymphoma, T-Cell ; etiology ; metabolism ; Male ; Middle Aged ; Natural Killer T-Cells ; metabolism ; pathology ; Orbital Neoplasms ; complications ; metabolism

Aged ; Antigens, CD ; metabolism ; Antigens, Differentiation, Myelomonocytic ; metabolism ; Carcinoma, Large Cell ; metabolism ; pathology ; Diagnosis, Differential ; Histiocytic Sarcoma ; metabolism ; pathology ; surgery ; Hodgkin Disease ; metabolism ; pathology ; Humans ; Lymphoma, Large B-Cell, Diffuse ; metabolism ; pathology ; Lymphoma, Large-Cell, Anaplastic ; metabolism ; pathology ; Male ; Melanoma ; metabolism ; pathology ; Receptors, Cell Surface ; metabolism ; Stomach Neoplasms ; metabolism ; pathology ; surgery

OBJECTIVETo make the emergency response to the diseases control and prevention with flooding more scientific ally-based and efficient.

METHODSHubei and Jiangxi province were chosen as the study fields and to establish a data management system of emergency response on flooding using remote sensing (RS) and geographical information system (GIS).

RESULTSSpatial and basic data together with data on flooding were linked to the code of location, and established on the platform of GIS. Through this system, information on flooding was able to be more rapidly and visually analysed.

CONCLUSIONUsing this system, the extent of flooding and the possible epidemic of some communicable diseases during flooding could be ascertained and predicted scientifically and the resource and capacity of emergency response to the disease control and prevention in flooding areas could also be evaluated.

China ; Databases, Factual ; Disaster Planning ; organization & administration ; Disasters ; Environmental Monitoring ; Female ; Geographic Information Systems ; organization & administration ; Humans ; Male ; Management Information Systems

Objective To study the conventional MRI and dittusion weighted imaging(DWI) features of Japanese encephalitis(JE)in children.Methods Sixteen patients with JE were included. Conventional MRI and DWI sequences were performed in all patients.Seven patients received MRI within 10 days of onset and 9 after 10 days.The appearances on DWI and T_2 WI were recorded.The ADC values of lesions were calculated,and then were correlated with the corresponding time interval between onset of neurological symptoms and MRI scanning.Results The lesions of JE mainly showed long T_1 and long T_2 signal intensity on MRI.The thalami were the most frequently involved areas,and 15 out of 16 showed thalamic involvement and 6 patients only showed thalamic abnormalities without other lesions.Seven patients within 10 days of onset showed lesions with high signal intensity on both DWI and T_2WI,but whole or partial lesions showed clearer on DWI than on T_2WI,and 2 patients showed extra lesions that were invisible on T_2WI.As for the other 9 patients after 10 days of onset,the lesions showed clearer on T_2WI than on DWI. There was a direct correlations between thalamic ADC values and the disease duration (r=0.84,P

Objective To study the clinical efficacy of anus-preserving rectectomy by using telescopic anastomosis of colon and rectal mucosa for the middle and lower rectal cancer. Methods A retrospective analysis was carried out in 402 cases with middle and lower rectal cancer undergoing telescopic anastomosis for anus-preserving procedure, including 241 males and 161 females, age ranging from 21 to 99 years, averaging at 55. 7 years. The distal margins of the tumors were within 6 - 9 cm to anal verge. According to TNM staging, there were 123 cases in Stage Ⅰ , 244 cases in Stage Ⅱ , 31 cases in Stage Ⅲ,and 4 cases in Stage Ⅳ. Results 345(345/402, 85. 8% ) cases were followed up, the median time of the follow-up was 6. 1 years. Postoperative complications included 17(4.2%) cases of stomal leakage, 11(2.7% ) cases of stomal stenosis. All patients recovered normal defecating function 12-24 weeks post operation. Local recurrence rate was 6. 3% (22/345). Hepatic and lung metastasis was 13. 6% (47/345) and 2. 6% (9/345)respectively. The five year survival rate was 68. 7% (112/163). Conclusions Anuspreserving rectectomy by using telescopic anastomosis is safe and effective procedure to treat middle and lower rectal cancer, with the preservation of anal function and without the increasing rate of local recurrence.

Objective To study clinical therapeutic effects of anus-preserving operation with resecting anal intersphincter to treat ultra-low rectal cancer through abdominal cavity. Methods We retrospectively analyzed 52 cases of ultra-low rectal cancer, with the inferior border of the cancers within 2 cm to anocutaneous line or 5 cm to the edge of anus treated by anus-preserving operation with resecting archos internal sphincter muscles through abdominal cavity and anus. There were 29 males, and 23 females, with age 28 to 76 years old, averaging 56. 3 years old. The inferior border of the cancer were within 4 cm to the edge of anus in 18 cases, including 6 cases of adenoma cancerization, and 5 cm to the anus in 34 cases. Pathologic diagnosis was well-differentiated adenocarcinoma in 21 cases, moderately differentiated in 29 cases, low differentiated in 2 cases, there were 6 cases with adenoma cancerization. 28 cases were Dukes A stage, and 24 B stage. Results The follow-up rate was 88. 4% (46/52), and the median time was 5.9 years. 2 case developed stoma leak (3.8%), and 3 developed stoma stenosis(5.7% ) after operation. The anus could roughly control defecation in 6 ～ 12 mouths after operation. The local recurrence rate was 5.7%, and the 5-year-survival rate was 72.7%. Conclusion By anus-preserving operation with resecting archos internal sphincter muscles, defecation controlling was well reserved by anus, and the 5-year-survival rate was not cut down. This operation is one of the safe and effective operations of anus-preserving procedure.

OBJECTIVETo explore the effect of malignant transformation of the L839P, a new mutation site of the PDGFRA gene, on the pathogenesis of gastrointestinal stromal tumors.

METHODSAll recombinant plasmids were stably transfected into CHO cells by liposomes. Western blotting was used to detect the expression of PDGFRA protein. The cell growth curve was plotted by cell counting. Flow cytometry was used to detect the cell cycle and apoptosis of CHO cell, respectively. The stably transformed cells were inoculated subcutaneously into the back of nude mice and the mice were used to observe the tumorigenesis. Transient transfection of the mutant-type plasmids of PDGFRA gene and the wild-type plasmids of kit gene into the CHO cells was performed. Western blot was used to detect the expression of kit protein and its phosphorylated forms.

RESULTSPDGFRA protein expressed in the negative control, experimental group and positive control, except the empty vector. The growth curve showed that it was accelerated in the experimental group and positive control. The ratios of cells in proliferative phase were 28.4% (blank), 24.5% (negative control), 43.8% (experimental group) and 40.9% (positive control). Their apoptotic indexes were 1.8%, 1.9%, 1.5% and 1.6%, respectively. After three weeks, tumors were observed in the nude mice of experimental group and positive control, inoculated with the stably transformed cells. Moreover, the expression of phosphorylated protein of kit was enhanced after cotransfection of the mutant-type plasmids of PDGFRA and the wild-type plasmid of kit.

CONCLUSIONThe PDGFRA mutant L839P is a gain-of-function mutation and has obviously malignant transforming effect on normal cells, and may activate kit protein accelerating the tumorigenesis. Gastrointestinal stromal tumors;

Animals ; Apoptosis ; CHO Cells ; Cell Cycle ; Cell Proliferation ; Cell Transformation, Neoplastic ; Cricetinae ; Cricetulus ; Gastrointestinal Stromal Tumors ; etiology ; genetics ; pathology ; Mice ; Mice, Nude ; Mutation ; Plasmids ; Proto-Oncogene Proteins c-kit ; metabolism ; Receptor, Platelet-Derived Growth Factor alpha ; genetics ; metabolism ; Transfection

OBJECTIVETo investigate the association of C-erb B-2 expression with angiogenesis in nasopharygeal carcinoma.

METHODSSeventy-seven specimens of nasopharygeal carcinoma were examined immunohistochemically for protein expressions of C-erb B-2 and vascular endothelial growth factor (VEGF), and the microvessel density (MVD) was determined by immunostaining of the endothelial cells for factor VIII-related antigen (F8).

RESULTSPositive C-erb B-2 immunostaining was observed in 36.36% (28/77) of the nasopharygeal carcinoma tissues, which had a VEGF positivity rate of 32.48% (25/77). High positivity rate of C-erg B-2 was associated with high positivity rate of VEGF and high MVD (P<0.05).

CONCLUSIONThe expression of C-erb B-2 may contribute to angiogenesis in nasopharygeal carcinoma.

Adult ; Aged ; Carcinoma ; blood supply ; genetics ; metabolism ; pathology ; Female ; Gene Expression Regulation, Neoplastic ; Humans ; Male ; Middle Aged ; Nasopharyngeal Neoplasms ; blood supply ; genetics ; metabolism ; pathology ; Neovascularization, Pathologic ; Receptor, ErbB-2 ; genetics ; metabolism ; Vascular Endothelial Growth Factor A ; genetics ; metabolism ; Young Adult